2inchBarrel length:100mm/4

Full Metal Reinforced Internal Blowback Unit

Echo 1 has the answer

Unique piston-derived upper receiver design with M-LOK compatible rail and full length 20mm Picatinny top rail for attachment of optics and back-up iron sights

Nickel Metal Hydride (NiMH) batteries are your best bet when it comes to a durable battery that's going to last

Cytac R-Defender Hard Shell Holster for GLOCK GEN 3 [G17, G22, G31] Airsoft Sub-Machine Gun 2inchBarrel length:100mm/4Specifications Brand: Cytac Material: Military Grade Polymer Color: Black Compatibility: Glock 17 Gen5, Glock 17, 22, 31 (Gen 1,2,3,4) Package Includes: 1X Holster Features Stronger body offers firm protection for pistol in a combat situation New smooth body design maintains simplicity while staying strong Holster enables a smooth draw, by gripping the handgun naturally and slightly depressing the index finger release button Compatible with Glock 17